Servicing capabilities, including the ArrayAllocationWarningSize option for printing the calling stack of an array allocation.

JWarmup pre-compiliation.

Like SAP’s SapMachine Java variant, Dragonwell is described by Alibaba as a “friendly fork,” offered under the same terms as OpenJDK. Dragonwell was derived from the Alibaba/Alipay JDK, which supports the company’s Taobao website, Ant Financial financial services, and Cainiao logistics. Alibaba is contributing technology developed for Dragonwell back to OpenJDK at large, including a preview of Java Flight Recorder and JWarmup.